Home / 256,823.88-354,397.70-143,624.76

Finding the Fourth Proportional to 256,823.88, 354,397.70 and 143,624.76

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Solution

The fourth proportional to 256,823.88, 354,397.70 and 143,624.76 is: 198,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,823.88 : 354,397.70 = 143,624.76 : x
  2. Step 2: Convert to fraction form
    256,823.88/354,397.70 = 143,624.76/x
  3. Step 3: Cross multiply
    256,823.88x = 354,397.70 × 143,624.76
  4. Step 4: Simplify right side
    256,823.88x = 50,900,284,607.05
  5. Step 5: Solve for x
    x = 50,900,284,607.05/256,823.88
  6. Step 6: Final answer
    x = 198,191.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.